[Annual changes of THI (Todai Health Index) scores of workers in a large-sized enterprise].

To develop a well controlled working environment including a mental health supporting system, it is important to survey the health status of workers. The authors analyzed results of the Todai Health Index (THI), which was administered to employees of a large-sized enterprise in Osaka in 1984, 1986, and 1987. The results were as follows: 1) Female workers had more complaints of "eye and skin", "many subjective symptoms", "mental instability", and "psychosomatic disorder" than males. Male workers complained more of "aggressiveness", "lie scale", and "arousal" than females. 2) The authors could not detect any annual changes of each scale during the 3 years. These results are similar to previous reports. 3) Some people had continuous complaints of "psychosomatic disorder" and "neurosis". These results indicate that THI is useful in obtaining information regarding mentally high risked workers.